1. The sales reported in this Form 4 were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

2. The option was granted on January 20, 2015, the vesting commencement date ("VCD"). The option vests in equal increments on each monthly anniversary of the VCD, subject to continued employment with the Issuer through the applicable vesting dates.

3. Each share of Class B Common Stock has no expiration date and is convertible for no additional consideration into one (1) share of Class A Common Stock at the option of the holder thereof at any time and upon certain other circumstances.

Remarks:

/s/ Vivian Yang, Attorney-in-Fact for Robert D. Perdue

10/02/2018

** Signature of Reporting Person

Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person,
see
Instruction
4
(b)(v).